plotAnnotatedPeptide: plotAnnotatedPeptide
In mjhelf/MassTools: R package for mass and molecular formula calculations

plot an annotated peptide sequence

1 2	plotAnnotatedPeptide(peaklabels, sequence, parseLabels = F, sortby = "intensitySpec", cx = 2, yoffset = 0)

`peaklabels`	data.frame with labeling informationi, as returned by `annotateSpectrum`
`sequence`	peptide sequence (character)
`parseLabels`	optionally apply parse() to peaklabels$label and add as label (NYI)
`sortby`	sort (decreasing) by this column. Only the top 2 ions for each position (for both a,b,c ions AND x,y,z ions) will be shown
`cx`	font size factor for the sequence characters, other font sizes will be scaled accordingly
`yoffset`	y axis offset